EH-TW3500/4500/5500 Disassembly and Assembly CONFIDENTIAL
SEIKO EPSON 79 Revision A
3.3.9.2 Auto Iris
1. Remove the Lamp. (p.55)
2. Remove the Side Cover L/Side Cover R. (p.57)
3. Remove the Upper Case (assembly). (p.59)
4. Remove the MA Board (assembly). (p.68)
5. Remove the DR Board (EH-TW4500/5500 series only). (p.73)
6. Remove the Optical Engine (assembly). (p.75)
7. Remove the screw ( ) and release the GND cable (2) (EH-TW4500/5500 series
only).
8. Remove the three screws.
9. Rotate the gear in the direction of the arrow up to the state as shown below, and
remove the Auto Iris.
Figure 3-28.
Standard Operation Time 17 Min.
The shape of the shutter of the Auto Iris for EH-TW3500 series and EH-
TW4500/5500 series differs. Referring to the figures below, make sure to
confirm the shape before installing the Auto Iris.
EH-TW3500 series EH-TW4500/5500 series
A2 Shutter
Auto Iris
Optical Engine
(assembly)
SCREW,AI FASTEN
C.B.P-TITE SCREW,3X10,F/ZB-3C
GND cable (2)
Gear
EH-TW4500/5500 series
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